Fix: KPI List of available metrics
Implementation of KPIServiceImpl#listExecutions returns Executions where user has direct READ permission assigned.
Change this to List<Execution> with @PostFilter("hasPermission(returnObject, ...
List of available metrics
GET /api/v1/kpi/observations returns the list of names of available metrics:
[ "accession.updates","accessions.count","accessions.doi","dataset.accessions","institute.pdci"... ]